Surrey · England
Glazing Silicone in Knaphill
Glazing silicone for conservatories, rooflights, glass panels and shower screens for homeowners, landlords and businesses in Knaphill. Fully insured, ARBOMaster approved and guaranteed for a year.
- Leaks where conservatory glass meets the frame
- Shower screens leaking along the wall or tray
- Failed sealant around rooflight glass
Leave it or put it right?
A leaking joint won’t fix itself. Left, water can mark floors, damage plaster and rot timber so early action saves a bigger repair. Around Knaphill, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.
What you get with us
- A sealant colour to suit the surroundings
- White, clear, grey or another colour, product permitting
- We leave the area clean and tidy
- Quality sealants from Arbo and Everbuild
Take a look at our cost guide and what customers say.
Glazing silicone in Knaphill, done properly
Glazing silicone is a maintenance item. Sun, rain and movement wear it down and cracked joints let water in. Resealing puts that right. We are often asked to deal with rooflight joints letting water in and water tracking down the inner face of the glass, on conservatory frames, glass-to-frame joints and glass balustrade bases.
Around Knaphill, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows.
We stand behind the work with a one-year guarantee.
- Where
- Knaphill (GU21, GU24)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Knaphill
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to St Hugh of Lincoln's Church include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. For landlords with property near Brookwood station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. For site and facilities teams at buildings such as Knaphill School, its window and door frames need their mastic kept sound, just like a home’s.
Knaphill is about 2 miles west of Woking, in Surrey. Jobs in Knaphill get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Surrey, we cover 395 places, Knaphill among them. For nearby work, see our Reading page.
All of GU21 and GU24 is covered for glazing silicone. Local streets include Wood Lane, High Street and Barnby Road, and we cover them all. We also cover Bisley (1 mile north-west), Sheet's Heath (1 mile south-west), Castle Green (1 mile north), Brookwood (1 mile south-west) and Penny Pot (1 mile north). Further out, we also cover Guildford (5 miles south), Camberley (5 miles west), Epsom (15 miles east), Farnham (11 miles south-west), Egham (8 miles north) and Walton-on-Thames (10 miles north-east).
Around Knaphill
In Knaphill, that means homes and buildings near Anchor Inn, The Winston Churchill School A Specialist Sports College and Brookwood Lye and the streets around them. The closest station to Knaphill is Brookwood station, about 1.4 miles south-west. Nearby you will also find The Peacocks (2.5 miles east) and Brookwood Hospital (within half a mile south). Open spaces near Knaphill include Brookwood Lye.
Also near Knaphill
What else we do in Knaphill
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Different surfaces, different methods
Glass-to-glass joints
Where two panes meet, the silicone joint takes all the movement. It must be clean, neat and well bonded.
Glass-to-frame joints
We cut the old silicone from the glass without scratching it and reseal with glazing silicone.
Knaphill questions
Is Knaphill within the area you cover?
Yes, Knaphill is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Knaphill in your area for glazing silicone?
Yes. We work across London and the South East, and Knaphill is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
When is the sealant fully cured?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
Do you seal glass balustrade bases?
Yes. The sealant joint at the base can be renewed. Fitting glass is a separate trade.
Do you reseal glass shower screens?
We can. We remove the old silicone carefully, and the joints are cleaned and resealed.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
Looking after it afterwards
After the cure time, these simple habits help:
- Use gentle products around the joints
- Act on drips or damp patches early
- Run a squeegee over the glass when you are done
- Look over the glazing joints once a year
Gentle products are best near the sealant. Strong solvents can soften or mark it.
Conservatory leaks rarely stay small. Water travels along the frame and into the wall, so get it looked at when you first see it.
What we can’t put right
We will not take on work that will not last, so here’s what sealant can’t put right:
- Leaks from the roof covering or flashing (a roofer’s job)
- Structural problems with a conservatory roof
- A frame that needs repairing or replacing
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Shower screens
- Rooflights
- Glass balustrade bases
- Glass-to-frame joints
- Glass-to-glass joints
- Conservatory frames
For landlords and businesses
We also work for property managers and facilities teams in Knaphill and across Surrey. Several sites can be quoted together, and we are fully insured for the work.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
How it works
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours, depending on how many joints need doing. For a job in Knaphill, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at the glazing and agree which joints need resealing.
- We cut away the failed silicone.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- The joints are checked before we leave.
How to prepare
- Try not to wet indoor joints just before the visit
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
Getting a quote
For glazing silicone in Knaphill, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.